55225225 has 24 divisors (see below), whose sum is σ = 75039840. Its totient is φ = 39984000.

The previous prime is 55225223. The next prime is 55225243. The reversal of 55225225 is 52252255.

55225225 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 55225225 - 2¹ = 55225223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55225193 and 55225202.

It is not an unprimeable number, because it can be changed into a prime (55225223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 112230 + ... + 112720.

It is an arithmetic number, because the mean of its divisors is an integer number (3126660).

Almost surely, 2^55225225 is an apocalyptic number.

55225225 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55225225 is a deficient number, since it is larger than the sum of its proper divisors (19814615).

55225225 is a wasteful number, since it uses less digits than its factorization.

55225225 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 921 (or 916 counting only the distinct ones).

The product of its digits is 10000, while the sum is 28.

The square root of 55225225 is about 7431.3676399435. The cubic root of 55225225 is about 380.8136421190.

It can be divided in two parts, 55225 and 225, that multiplied together give a square (12425625 = 3525²).

The spelling of 55225225 in words is "fifty-five million, two hundred twenty-five thousand, two hundred twenty-five".